Duane RFB&D can produce books far quicker than NLS can. Secondly, RFB&D generally doesn't make decisions as to what to record; members submit the books to them. Finally, unlike NLS, there is no waiting period for RFB&D materials as tapes and cds are copied for users as needed. One can be on a waiting list, on the other hand, for a considerable period of time for a book from their regional library.